Abstract
Because of the incongruity of establishing the impulse withstand level of most equipment on a 1.5x40- microsecond voltage wave and of not using the same wave shape for the discharge voltage of valve type arresters, questions have arisen. To help clarify the situation, several pertinent topics will be discussed. They include: 1. The shape of the arrester discharge volt-time curve produced by a 10x20 microsecond test current wave; 2. Its effect on co-ordination; 3. The effect of steeper front current wave tests on arrester discharge voltage; 4. Reasons for decreasing the 10-microsecond current wave front.
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Schedule a callMore From: Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems
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